<template>
  <div>
    <!-- 面包屑导航器 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item><a href="/">用户管理</a></el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区 -->
    <el-card >
      <!-- 搜索与添加区 -->
      <el-row :gutter="20">
         <el-col :span="8">
           <el-input placeholder="请输入内容" @clear="getUserList()" clearable v-model="queryInfo.query" class="input-with-select">
             <el-button  @click="getUserList()"  slot="append" icon="el-icon-search"></el-button>
           </el-input>
         </el-col>
         <el-col :span="4">
             <el-button @click="addDialogVisible = true" type="primary">添加用户</el-button>
         </el-col>
      </el-row>
      <!-- 用户列表区 -->
      <el-table :data="userList" style="width: 100%" border stripe>
        <el-table-column  type="index" >
        </el-table-column>
        <el-table-column prop="username" label="姓名" width="180">
        </el-table-column>
        <el-table-column prop="email" label="邮箱" width="180">
        </el-table-column>
        <el-table-column prop="mobile" label="电话" width="180">
        </el-table-column>
        <el-table-column prop="role_name" label="角色" width="180">
        </el-table-column>
        <el-table-column  label="状态" width="180">
            <!-- 作用域插槽 -->
            <template slot-scope="scope">
              <el-switch @change="userStateChanged(scope.row)" v-model="scope.row.mg_state">
              </el-switch>
            </template>
        </el-table-column>
        <el-table-column label="操作" width="300px">
              <template slot-scope="scope">
                <!--修改按钮-->
                <el-tooltip  effect="dark" content="修改用户信息" placement="top-start"  :enterable="false">
                  <el-button @click="showEditDialog(scope.row.id)" type="primary" icon="el-icon-edit" size="mini">编辑</el-button>
                </el-tooltip>
                <!--删除按钮-->
                <el-tooltip  effect="dark" content="删除用户" placement="top-start"  :enterable="false">
                  <el-button type="danger" @click="removeUserById(scope.row.id)" icon="el-icon-delete"  size="mini" >删除</el-button>
                </el-tooltip>
                <!--分配权限-->
                <el-tooltip  effect="dark" content="分配角色" placement="top-start"  :enterable="false">
                  <el-button type="warning" @click="showSetRole(scope.row)" icon="el-icon-setting" size="mini">分配角色</el-button>
                </el-tooltip>
              </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
      <!-- 添加用户的对话框-->
      <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed">
        <!--内容主体区域-->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <!--内容底部按钮区域 点击了就隐藏对话框-->
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 修改用户的对话框-->
      <el-dialog
        title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close="editDialogClosed">
        <!--内容主体区域-->
        <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
          <el-form-item label="用户名" >
            <el-input v-model="editForm.username" disabled></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="editForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <!--内容底部按钮区域 点击了就隐藏对话框-->
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button  @click="editUserInfo" type="primary">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 分配角色的对话框-->
      <el-dialog
        title="分配角色"
        :visible.sync="SetRoleDialogVisible"
        width="50%"
        @close="setRoleDialogClosed">
        <!--内容主体区域-->
        <dic>
           <p>当前的用户:{{userInfo.username}}</p>
           <p>当前的角色:{{userInfo.role_name}}</p>
           <p>分配新角色:
              <el-select v-model="selectedRoleId" placeholder="请选择角色">
                 <el-option v-for="(item) in rolesList"
                   :label="item.roleName" :key="item.id" :value="item.id"
                 >
                 </el-option>
              </el-select>
           </p>
        </dic>
        <span slot="footer" class="dialog-footer">
          <!--内容底部按钮区域 点击了就隐藏对话框-->
        <el-button @click=" SetRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo" >确 定</el-button>
        </span>
      </el-dialog>
    </el-card>

  </div>
</template>

<script>
export default {
  data () {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) return cb()
      cb(new Error('请输入合法的邮箱'))
    }
    // 验证手机号的规则\
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) return cb()
      cb(new Error('请输入合法的的手机号'))
    }
    return {
      // 获取用户列表的请求参数
      queryInfo: {
        query: '',
        // 当前页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 5
      },
      userList: [],
      total: 0,
      // 控制添加用户的对话框的显示属性
      addDialogVisible: false,
      // 控制修改用户的对话框的显示属性
      editDialogVisible: false,
      // 控制分配角色对话框的显示属性
      SetRoleDialogVisible: false,
      // 需要被分配角色的信息
      userInfo: [],
      // 所有的角色列表
      rolesList: [],
      // 已选中的角色ID值
      selectedRoleId: '',
      // 添加用户的表单
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 查询到的用户信息
      editForm: {},
      // 添加用户表单的验证规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', tigger: 'blur' },
          { min: 5, max: 10, message: '用户名的长度在5~10字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 5, max: 15, message: '用户名的长度在5~15字符之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      }
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) return this.$message.error('获取用户失败')
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize改变事件
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      // 重新发起数据请求
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      // 重新发起数据请求
      this.getUserList()
    },
    // 监听 switch开关状态的改变
    async userStateChanged (userinfo) {
      // 保存用户的最新状态
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    // 监听对话框关闭事件 重置表单
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 表单预校验 点击添加用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 添加用户请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('添加用户失败')
        this.$message.success('添加用户成功')
        // 隐藏对话框
        this.addDialogVisible = false
        // 刷新用户列表
        this.getUserList()
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog (id) {
      // 查询该用户的信息
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('查询用户信息失败')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的事情
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并且提交
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return this.$message.error('修改用户信息失败')
        // 发起修改用户的请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) return this.$message.error('更新用户信息失败')
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新用户信息成功')
      })
    },
    // 根据id删除用户信息
    async removeUserById (id) {
      // 弹框询问用户是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户信息, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => {
        return err
      })
      // 用户点删除 返回confirm  点击取消返回 cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除')
      }
      // 删除操作
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('删除用户失败')
      this.$message.success('删除用户成功')
      this.getUserList()
    },
    // 打开分配角色对话框
    async showSetRole (userInfo) {
      this.userInfo = userInfo
      // 获取所有的角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色列表异常')
      this.rolesList = res.data
      this.SetRoleDialogVisible = true
    },
    // 保存分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        this.$message.error('请选择要分配的角色')
      }
      // 发起请求
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      if (res.meta.status !== 200) return this.$message.error('分配角色失败')
      this.$message.success('分配角色成功')
      this.getUserList()
      // 关闭对话框
      this.SetRoleDialogVisible = false
    },
    //  清空分配角色对话框
    setRoleDialogClosed () {
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style scoped>
  .el-pagination{
     margin-top: 15px;
  }
</style>
